Use the Ddcheat to go back to Feeco Depot(Can't remember if you can.) and then simply go back in. If he's not fixed... You have a problem and may end up having to start the game over again. As for the savegame that switches over to your freinds version... That might work but it is possible that it will simply make your freinds version have the same bug. Worth a try though. If you can transfer the savegame that is. I'm not well informed about this sort of thing so I don't know.
In a nutshell you have about three options. Use Ddcheat, transfer the savgame, or just do what Havoc said.
Incidently, I can't get Abe's Exoddus to run on my XP but Oddysee works like it just came out of the box. Help anyone?
